I want to know if anyone has a 17" pBook and what they think of it. I want to have a mobile studio, as i will only have one computer. I want to do some music production on it. I prefer the 15" size to the 17" but the 17 inch has the digital audio in and out. how important is that, and what is the difference in quality, and if i got the 15" is there an adaptor that could make up for any difference?